Smoke and fume eliminator



' June 12, 1945. H 5 BECK SMOKE AND FUME ELIMINATOR Filed Sept. 15, 1943 INVENTOR How/m0 6. 3 K

ATTORNEY Patented Jane 12, 1945 UNITED STATES PATENT SMOKE AND FUME ELIMINATOR Howard S. Beck, Portland, reg. I

Application September 15, 1943, SerialNo. 502,545

' 6 Claims. (Cl. 98-115) This invention relates to smoke and fume eliminators and the primary object of the invention is to carry away smoke and fumes that are gen-,

erated in welding of pipes and the like. These fumes in the welding of certain classesof pipe are .very injurious to any one coming in contact with them.

Another object of my invention is to provide a smoke eliminator that can be adjusted over a pipe and secured thereto in such a manner as to trap and exhaust the fumes generated by welding through a suitable exhaust blower, as commonly used for exhausting fumes and the like.

A further object of my invention is to provide a device that can be adapted to any size pipe, either vertical or horizontal and that may be located adjacent obstructions.

These and other incidental objects will be apparent in the drawing, specification and claims.

Referring to the drawing:

Figure 1 illustrates my new and improved smoke and fume eliminator mounted to a pipe being welded.

Figure 2 is a plan sectional view taken of the device on line 2-2 of Figure 6.

Figure 3 shows the device removed from the pipe, the same illustrating how the device is attached to a pipe midway its length.

Figure 4 illustrates adapters of different sizes to be vused on pipes of varied diameters.

Figure 5 illustrates the device mounted to a pipe, having an additional suction line for removing the fumes from within the pipe on those pipes that are open to the atmosphere adjacent the workman.

Figure 6 is an end view of the pipe having my 'new and improved smoke eliminating device in position by the slots [3 engagingthe pins l2 underneath the enlarged heads M. Itwill be noted that the adapter plate 9, located adjacent the weld l5, has openings l6 for allowing the smokegenerated at the weld to be drawn through, as indicated by the arrows, into the drum. 5 and discharged through the outlet nipple I"! and into the suction hose line [8. The adapter plates 10 fit more or less snugly at 15 to the pipe, but these plates do not have to form a perfect seal, as a slight leakage at this point is immaterial.

When the suction hose I8 is placed over the outlet nipple l1 and revolved slightly the bayonet joint 20 will engage the pin 2|, the drum assembly will be held together in the following manner. The body portions 3 and 4 making up the drum 5 are hingedly secured together at 22 and when they are closed to working position the nipple l'i will be maintained in closed position by the suction hose l8 fitting therearound. This construction is one of the features of my invention, as it is possible to mount the device to a pipe midway of its length and lock the same thereon by the suction hose without any outside fastening means.

The adapter plates 9 and It may not be used in some forms of construction, as the drum could be made in different sizes, adapting itself to the different sized pipes. By using the adapter plates a correct range of useability may be obtained from a limited number of devices, fitting a number of different sized pipes.

In many instances. it is desirable to remove the fumes from within the pipe being welded, as

. well as from the outside. I have illustrated in ing operation being located at 2. My smoke eliminator is openedas illustrated in Figure 3 and mounted over the pipe to the position shown in Figure 1. The device consists of a pair of body portions 3 and 4, forming a cylindrical drum 5 and having end flanges 6 and I. The inner openings 8 of the flanges 6 and 1 are large enough to accommodate a number of different sized pipe. The adapter plates 9 and ID are mounted to the drum 5 to fit the pipe being welded.

The plates have openings H for engaging the holding pins 12, which are fixedly secured to the flanges 6 and I of the drum 5. By registering the holes II with the pins and revolving the adapter plates slightly they will be maintained Figure 5 a method of accomplishing this result. With my device a special Yfitting 23 is employed, dividing the suction hose 24 betweenthe fume eliminator 25 and a suction hose 26, which may be inserted within the pipe 21 as illustrated. r

This assures complete elimination of smoke and fumes from an open ended pipe,- which could not be done with the device 25 separately, as many fumes are developed within thepipe', but which are of no consequences in the event the pipe is a closed circuit, but are a factor on a pipe that is open to the atmosphere within the working What is claimed is:

1. A smoke and fumes eliminator, comprising a two-part casing including plates to be removably fitted at the ends of the casing, means connecting the parts of the casing to permit such casing parts to be opened and closed relative to the element being handled, said plates being formed with an opening to more or less snugly embrace the element being handled, one of the plates being further formed with openings to admit fumesfromthe element being handled, and an escape conduit section on each casing part and formed to be connected to secure the casing parts in operative relation.

2. A construction as defined in claim- 1, wherein a suction inlet is provided to embrace and secure the ends of the escape conduit together to there fix the parts of the: casing in operative relation. 7

3. A construction as defined in claim 1, wherein the plates are formed for removably interlocking. cooperation with each part of the casing and further formed to together embrace the element being handled, the element embracing portions of the plates being formed with openings to provide a fume entrance to the casing.

4. A construction as defined in claim 1, wherein the plates are arranged at each end of the casing and include at each end at least two sections having bayonet-joint connection with the casing for removability and axially formed to embrace the article being handled, the plates at one end of the casing being formed with openings to admit fumes or the like to the interior of the casing.

5. A construction as defined in claim 1, wherein the plates slidably fit the article being handled to permit the casing and plates to be arranged selectively in any position relative to the working point on the article being handled.

6. A smoke and fume eliminator, including a casing, comprising two semi-cylindrical hollow bodies hingedly connected for relative movement, an end plate for each end of each body, such plates being formed in their meeting edges with recesses together forming a means to fit the casing about the article to be handled, the end plates at one end of the casing being further formed with openings to admit fumes to tlie interior of the casing, and an escape conduit divided longitudinally into two parts each part of the conduit being connected to each body respectively, the conduit'parts being completed as a conduit when the bodies are in such correlation as to provide the casing.

. HOWARD S. BECK. 

